Fixing hole in gas tank?

[tri650]

I did a few stupid things in succession that caused me to open up a hole in the left lower part of the gas tank.  Long story short - i decided to repaint tank and first sealed with Caswell sealer.  I let too much drip down into the lower left side and it sealed up the opening where the line runs from front to back.  I thought it would be a good idea to try and drill through it and ended up going through the side of the tank - sort of.  I didn't go all the way through but enough where it was weeping gas. 

I cleaned out the area with a drill bit to get some space to repair.  I also used a dremel and that almost seemed like the heat sealed up the hole.  I totally drained the tank.